A lens with focal length -10 cm. Calculate the power of lens. Also , state the nature of lens.
A hand lens has 25D. Where should the lens be kept to read the letters of book?
Calculate the power of convex lens with focal length 80 cm.
Which one is the correct relation among f,u and v in lens?
What is meant by one dioptre power of lens? or Explain about the term 1dioptre.
What do you mean by power of lens ? or describe power of lens in your own words.
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